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  11. Influence Of Optical Aberrations On The Accuracy Of An Atomic Gravimeter

Influence of optical aberrations on the accuracy of an atomic gravimeter

Louis Pagot, Sébastien Merlet, Franck Pereira Dos Santos

    Optics Express
    |June 14, 2025

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    View abstract on PubMed

    Summary
    This summary is machine-generated.

    Accurate simulations for cold atom interferometers require advanced wavefront aberration analysis. Using delta-kicked atomic clouds can effectively reduce systematic errors in laser beam propagation for mrad-level precision.

    Area of Science:

    • Atomic, Molecular, and Optical Physics
    • Quantum Metrology
    • Laser Interferometry

    Background:

    • Cold atom interferometers are sensitive quantum devices used for high-precision measurements.
    • Laser beam wavefront aberrations can introduce systematic errors, limiting measurement accuracy.
    • Accurate modeling of these aberrations is crucial for achieving mrad-level precision.

    Purpose of the Study:

    • To investigate the impact of laser beam wavefront aberrations on cold atom interferometer simulations.
    • To determine the adequacy of low-order Zernike polynomials for describing retroreflective optics.
    • To explore methods for mitigating systematic effects caused by aberrations.

    Main Methods:

    • Numerical simulations of laser beam propagation with wavefront aberrations.

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  • Analysis using low-order and high-order Zernike polynomials.
  • Inclusion of aberration propagation effects in simulations.
  • Examination of atomic source parameters, including delta-kicked atomic clouds.

    • Main Results:

    • Low-order Zernike polynomial simulations are insufficient for mrad-level accuracy, showing dependence on decomposition order and technique.
    • High-order Zernike polynomials necessitate accounting for aberration propagation, not just additive effects.
    • Delta-kicked atomic clouds demonstrate potential for mitigating systematic errors.

    Conclusions:

    • Advanced simulation techniques are required to accurately model wavefront aberrations in cold atom interferometers.
    • The choice of aberration description and simulation method significantly impacts achievable precision.
    • Optimizing atomic source properties, such as using delta-kicked clouds, offers a pathway to improved systematic error mitigation.